Shuttle



July 29, 1924.

L. PAVIA 4 SHUTTLE Filed Feb. 8. 1925 "l Lui Patented duly 29, 1924.

LUIGI: PAVIA, OF ALLENTOWN, PEENNSYLVANIA.vr

SHUTTLE.

Application'le February 8, 1923. Serial No. 617,821. .l

To all whom t may conce/m:

rBe it known that I, LUIGI PAVIA', a sub-` ject of the King of Italy, residing at Allentown, in the county of Lehigh and State of Pennsylvania, have invented certain new and useful Improvements in Shuttles, of which the following is a specification;

The object of this invention is to provide means in a loom for absorbing'the shock incident to the blow of the picker which impels the shuttle across the lay or batten and to the checking of the shuttles flight at the end of the lay, whereby in particular to reduce as much as possible thel tendency of such shock to displace the windings of weft or filling longitudinally of the wound package. As loom shuttles are at present constructed the mass of windings, due to this shock, is frequently displaced on the quill, paper tube or other core on which the windings are wound, so that Vit then stands loose in the shuttle.V

In the accompanying drawing,

Fig. l is atop plan view of a fragment of a shuttle embodying my invention;

Fig. 2 is a longitudinal sectional view thereof, a filling package being shown (dotted) on the spindle; and

Fig. 8 is an enlarged sectional detail view taken in a longitudinal horizontal plane showing how the spindle is mounted.

a designates the body of an ordinary shuttle, b being its so-called quill-cavity and c a cavity extending therefrom and traversed as usual by two pins al and e and also by two other pins f and g, the latter two aording support for a spring h. On the pin Q is fulcrumed acarrier z' which is subjected to the action of the spring 7L in the manner shown in Fig. 2 so that it will be held thereby, when depressed, bearing against pin d and, when elevated to the dotted-line position, bearing with its butt end against the spring.

This carrier i is an elongated block of metal having a longitudinal hole j bore therethrough and formed with a counterbore ic extending from what isits butt or rear end to nearly its opposite end; the butt end of the bore is screw-threaded as indicated at Z. There is also a slit m invone side of the block extending from its butt end to a point more or less forward, the same communicating with the counterbore. Into the thread Z is tapped a screw n.

The spindle is constructed as follows: 0

is a spindle proper of the split type, itsv two legs being distendied midway of their length in the usual way so that theywill grip the bore of thewoun'd package, as that of the quill, paper tube or other corel for the windings thereof: Over thebutt end ofY this spindle properis slipped a collar p which keepsthe corresponding ends of the said legsinface toV face contact with each other.` The collar is held against Y.endwise displacement' by a screwg whichistapp'ed thereinto and bears against the spindle proper. The spindle proper has its butt end portion projecting into the hole j of the carrier and the collar u is arranged in the counterbore It, the head of screw g being arranged in the slit m and flattened or otherwise faceted to keep the screw from turning in the collar and the spindle from. turning in the bore.

Between the collar and the shoulder 7c forming an abutment at the forward end of the counterbore lo is interposed a spiral spring r, and between said collar and the screw a forming an opposite abutment is interposed another spiral spring s, said springs being coiled about the spindle andV normally coacting to hold the spindle against endwise displacement in each direction.

The carrier member, springs and parts o the spindle, with a screw g, may be assembled as follows: Having aliixed the collar on the spindle proper by means of the screw the spindle has reached the position indicated by Fig. 3. Then spring s is introduced into the counterbore and finally the screw n is driven home.

Vhen, in use, the shuttle is subjected to any endwise shock, as that of the picker or the shuttle checking means of the loom, the inertia of the spindle is assumed by one or the other of the springs, which immediately reacts to return the spindle to its normal position. Thus lthe shock is absorbed and' so there results in practice a very much less frequent loosening or slipping of the windings of the filling package.

Having thus fully described my invention, whatI claim ask new and desire to secure by Letters` Patent is i l. In combination, a shuttle body, a oarrier member arranged therein and having a bore and also a slot communicating with the bore, the bore and slot extending longitudinally of the shuttle body, a spindle in said bore confined thereby to move longitudinally thereof, means in the carrier member toyieldinglyl oppose said movement of the "spindle, and a V'screw screwed into and projecting laterally from the spindle and having a faceted portion in the slot confined` by the latter against turning, said screw preventing the spindle from turning inv the bore.

2l In combination, a shuttle body, a carrier member arranged therein and having a. bore and` also a slot communicating with the bore, the bore and slot. extending longitudinally of the shuttle body, a spindle in said bore confined thereby to move longitudinally thereof, said spindle including a spindle proper and a collar thereon housed in the bore, means in the carrier member and engaging said collar to yieldingly oppose said movement of the spindle, and a screw screwed into the collar against the spindle proper and' securing the collar thereto, said screw projecting laterally from the collar and having a faceted' portion in they slot coniined by the latter against turning and said screw preventing the spindle from turning in the bore.

In testimony whereof I aix my signature.

LUIGI PAVIA. 

